Given the task definition and input, reply with output. In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 

[header] How to recognize an overtired toddler [title] Recognize frustration. [step] Toddlers that are overtired will get irritated quickly when things are not happening as they think they should. Although this can sometimes be marked up as a toddler temper tantrum, it is usually due to exhaustion when it occurs along with the other signs listed here. <sep> (A) However, you shouldn't give a toddler overtired by the onset of this behavior, which can result in not engaging in their usual hobbies with their overtired toddler. In addition, try to keep a smart phone close and in reach at all times. (B) Learning to recognize your toddler's frustration and seem willing to cooperate with their intense disruptions can help with their behaviors and their behavior. [substeps] A toddler that is overtired will not be acting spoiled. (C) This is why you should be able to spot these signs so you can help your toddler treat them like adults. [substeps] It is important that you look for signs that your toddler is overtired. (D) [substeps] For example, a toddler that normally enjoys putting together simple puzzles might get frustrated or angry when they can't get a piece to fit. Instead of calmly asking for help or signaling for an aid, the toddler might scream or throw the puzzle.

D